20200100 CU YD EARTH EXCAVATION Base items 306,050.000; 20200200 CU YD ROCK EXCAVATION Base items 107,715.000; 20201200 CU YD REMOVAL AND DISPOSAL OF UNSUITABLE MATERIAL Base items 21,110.000; 20800150 CU YD TRENCH BACKFILL Base items 2,605.000; 21101505 CU YD TOPSOIL EXCAVATION AND PLACEMENT Base items 32,395.000; 21101625 SQ YD TOPSOIL FURNISH AND PLACE, 6" Base items 31,003.000; 21301052 FOOT EXPLORATION TRENCH 52" DEPTH Base items 2,200.000; 25000110 ACRE SEEDING, CLASS 1A Base items 1.000; 25000210 ACRE SEEDING, CLASS 2A Base items 27.750; 25000310 ACRE SEEDING, CLASS 4 Base items 22.250; 25000314 ACRE SEEDING, CLASS 4B Base items 0.500; 25000324 ACRE SEEDING, CLASS 5B Base items 0.500; 25000400 POUND NITROGEN FERTILIZER NUTRIENT Base items 4,590.000; 25000500 POUND PHOSPHORUS FERTILIZER NUTRIENT Base items 4,590.000; 25000600 POUND POTASSIUM FERTILIZER NUTRIENT Base items 4,590.000...